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Conjugated Polymers

Alternating sequences of single / double (sp 2 p z hybrid)

H

H

and / or single / triple (sp p z p y hybrid) C-C bonds

H

H

H

give delocalised π-electron systems.

Polyene

Benzene

1 st Generation Polyfluorenes:

Homopolymer:

Copolymer:

Fluor: highly fluorescent

Ene: conjugated molecule

PFO:

H 17 C 8

C 8 H 17

n

H 17 C 8

C 8 H 17

R

n

Copolymer R-moiety:

F8T2:

S

S

F8BT:

N

S

N

etc

Solution Photoluminescence:

• High chemical purity, good stability,

thermal processing, liquid crystallinity

• Generation one comprises homopolymers

and simple (alternating) copolymers

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